Return-Path: Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S1758529AbcK3SSh (ORCPT ); Wed, 30 Nov 2016 13:18:37 -0500 Received: from mail-io0-f194.google.com ([209.85.223.194]:36215 "EHLO mail-io0-f194.google.com" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S1758058AbcK3SS1 (ORCPT ); Wed, 30 Nov 2016 13:18:27 -0500 MIME-Version: 1.0 In-Reply-To: <20161130172435.GG8563@redhat.com> References: <20161130172435.GG8563@redhat.com> From: Linus Torvalds Date: Wed, 30 Nov 2016 10:18:26 -0800 X-Google-Sender-Auth: RT4jdwEURzQJrrhm7WQmlugm9s4 Message-ID: Subject: Re: Odd build breakage in 4.9-rc7 To: Jarod Wilson Cc: Linux Kernel Mailing List , Tony Luck , Prarit Bhargava Content-Type: text/plain; charset=UTF-8 Sender: linux-kernel-owner@vger.kernel.org List-ID: X-Mailing-List: linux-kernel@vger.kernel.org Content-Length: 701 Lines: 19 On Wed, Nov 30, 2016 at 9:24 AM, Jarod Wilson wrote: > > Now, if I omit the -j8 and do a single-threaded build, then things work > fine. Prarit bisected this failure to commit > 9a6fb28a355d2609ace4dab4e6425442c647894d, and indeed, when reverting that > patch and the two that follow it from rc7, parallel make works again. I seriously doubt that commit really makes a difference, and I think it was just random luck. Do you perhaps have ccache installed? Because ccache at some point broke dependency generation of "gcc -MM" that the kernel build system uses, giving those random "No such file" build errors. Try uninstalling ccache and see if that helps. Linus